Reported Tuberculosis in the United States, 2013
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Table 24. Tuberculosis Cases and Clusters by Cluster Size1: United States, 2011–2013
| Cluster Status | Clusters | Cases2 | ||
|---|---|---|---|---|
| No. | (%)3 | No. | (%)4 | |
| Total | 1,532 | (100.0) | 4,625 | (100.0) |
| 2-case cluster | 1,015 | (66.3) | 2,030 | (43.9) |
| 3-case cluster | 250 | (16.3) | 750 | (16.2) |
| 4 case cluster | 111 | (7.3) | 444 | (9.6) |
| 5 case cluster | 59 | (3.8) | 295 | (6.4) |
| 6 case cluster | 23 | (1.5) | 138 | (3.0) |
| 7 case cluster | 17 | 1.1 | 119 | 2.6 |
| 8 case cluster | 12 | 0.8 | 96 | 2.1 |
| 9 case cluster | 7 | 0.5 | 63 | 1.4 |
| ≥10 case cluster | 38 | 2.5 | 690 | 14.9 |
1 Clusters have two or more cases with matching spoligotype and 24-locus locus mycobacterial interspersed repetitive unit-variable number tandem repeat type (GENType) within a county during the specified 3-year time period.
2 Cases with matching spoligotype and 24-locus locus mycobacterial interspersed repetitive unit-variable number tandem repeat type (GENType) are members of a cluster within a county during the specified 3-year time period.
3 Denominator is total number of clusters
4 Denominator is total number of cases
Note: See Surveillance Slide #35
- Page last reviewed: September 30, 2014
- Page last updated: September 30, 2014
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